How does the formation of covalent compounds?

They share electrons.

Did you mean, "How does a covalent compound form"?

share their electrons.

For example, ##"H"_2"O"## (water) has hydrogen and oxygen.

As you might know, hydrogen wants to get 1 electron, and oxygen wants to lose 2 electrons.

Then, oxygen shares its electrons one each with hydrogen.

Here are some other covalent compounds.

You might be confused between covalent and .

Just remember that covalent share electrons, and ionic compounds give/take electrons.

For more information, I recommend to watch some videos.socratic.org/users/tyler-dewittvideos